我試圖將一個精靈保持在屏幕中央幾秒鐘，然后將其平滑地向左移動，直到它離開屏幕，然后我想要一個不同的精靈，它應該從屏幕右側移動到屏幕右側屏幕中心；所有這一切都在無限循環中。一個非常清楚的例子：public Sprite Pokemon_0;public Sprite Pokemon_1;? ? void Start()? ? {? ? GetComponent<SpriteRenderer>().sprite = Pokemon_0;}? ? void Update()? ? {? ? if (transform.position.x >= -80)?? ? {? ? ? ? transform.Translate(-1f,0f,0f);? ? }? ? else? ? {? ? ? ? GetComponent<SpriteRenderer>().sprite = Pokemon_1;? ? ? ? ?? ? }以下是據我所知。它將精靈平滑地向左移動，直到它離開屏幕，然后將精靈更改為其他精靈。我很新，所以如果有人可以編寫一個簡單的腳本，那將會非常有幫助。我也在努力學習，因此將不勝感激。
1 回答
Helenr
TA貢獻1780條經驗 獲得超4個贊
// The [Range()] attribute will make `speed` show up with a slider in the inspector
[Range(0.1f, 5)]
public float speed = 3;
public Sprite[] Pokemons;
private SpriteRenderer sr;
private float worldMiddleX;
private float worldLeftX;
private float worldRightX;
private int currentPokemon = 0;
private float secondsInMiddle = 3f;
void Start()
{
? ? sr = GetComponent<SpriteRenderer>();
? ? sr.sprite = Pokemons[currentPokemon];
? ? // Find out what X's in the world the left edge, middle & right of the screen is,
? ? // if you have a 1920x1080 resolution Screen.width will be 1920. But we don't
? ? // want to position us at x = 1920, because that is FAR away
? ? // So we need to figure out where in the GAME world, our screen right edge is
? ? worldMiddleX = Camera.main.ScreenToWorldPoint(new Vector2(Screen.width / 2, 0f)).x;
? ? // +100 & -100 because we want it to go outside of the screen a little bit
? ? // These should be tweaked based on the sprite width
? ? // Can be done dynamically / programatically too. Their width is in
? ? // Pokemons[0].rect.width
? ? worldLeftX = Camera.main.ScreenToWorldPoint(new Vector2(-100, 0f)).x;
? ? worldRightX = Camera.main.ScreenToWorldPoint(new Vector2(Screen.width + 100, 0f)).x;
? ? // Start our endlessly looping Coroutine, which will take care of?
? ? // 1. Moving to the middle.
? ? // 2. Waiting in middle
? ? // 3. Moving outside of screen to the left & resetting position
? ? // 4. Repeat
? ? StartCoroutine(SlideLeftButWaitMiddleEndlesslyLoop());
}
/*
* Changed from void to IEnumerator to get access to the
* `yield` keyword, which will let us pause execution for X seconds.
* If you do this with a normal method, you will need to invoke it with
* `StartCoroutine()` as it becomes a Coroutine, which will execute in?
* an asynchronous manner
*/
IEnumerator SlideLeftButWaitMiddleEndlesslyLoop()
{
? ? while (true)
? ? {
? ? ? ? // yield return *Coroutine* will make sure that the code doesn't continue?
? ? ? ? // its code path until it has completed its Coroutine (method execution)
? ? ? ? // Wait for MoveToMiddle() to finish executing
? ? ? ? yield return StartCoroutine(MoveToMiddle());
? ? ? ? // Wait for x seconds
? ? ? ? yield return new WaitForSeconds(secondsInMiddle);
? ? ? ? // Wait for MoveOutsideScreenAndReset() to finish executing
? ? ? ? yield return StartCoroutine(MoveOutsideScreenAndReset());
? ? }
}
IEnumerator MoveToMiddle()
{
? ? while (transform.position.x > worldMiddleX)
? ? {
? ? ? ? transform.Translate(-(speed * Time.deltaTime), 0f, 0f);
? ? ? ? yield return null;
? ? ? ? // yield return null here will make this loop pause until next frame
? ? ? ? // so that it doesn't just do all the loops instantly and teleport your sprite
? ? }
}
IEnumerator MoveOutsideScreenAndReset()
{
? ? while (transform.position.x > worldLeftX)
? ? {
? ? ? ? transform.Translate(-(speed * Time.deltaTime), 0f, 0f);
? ? ? ? yield return null;
? ? ? ? // yield return null here will make this loop pause until next frame
? ? ? ? // so that it doesn't just do all the loops instantly and teleport your sprite
? ? }
? ? // Change to the next sprite
? ? nextPokemonSprite();
? ? // Reset the position, then the Update() method will start again from the top
? ? // since this method will have fully executed
? ? Vector3 pos = transform.position;
? ? pos.x = worldRightX;
? ? transform.position = pos;
}
// If we're at the last Pokemon in the Pokemons array, start over at 0
void nextPokemonSprite()
{
? ? currentPokemon++;
? ? if (currentPokemon == Pokemons.Length)
? ? ? ? currentPokemon = 0;
? ? sr.sprite = Pokemons[currentPokemon];
}
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